BlackRock Inc. disclosed a new investment in ATI Inc. through a 13F filing on August 19, 2026. The firm acquired 18,708,922 shares in the specialty materials provider. The total value of the acquisition reached approximately $3.69 billion. This purchase secures a 13.71% ownership stake for BlackRock.

ATI recently outperformed analyst estimates with quarterly earnings of $1.23 per share. The company generated $1.26 billion in revenue during the quarter. This represents a 10.6% increase over the prior year's performance.

Market analysts project full-year earnings of $5.15 per share for the company. Initial reports showed no immediate market reaction to the filing.